Absolute age evidence of Early to Middle Ordovician volcanism in Peninsular Malaysia

Long Xiang Quek^*, Azman A. Ghani, Yu Ming Lai, Hao Yang Lee, Mokhtar Saidin, Muhammad Hatta Roselee, Muhammad Hafifi Badruldin, Meor H.Amir Hassan, Jasmi Hafiz Abdul Aziz, Tham Fatt Ng, Muhammad Afiq Muhammad Ali, Mohamad Tarmizi Mohamad Zulkifley